CVE-2026-101582 in Helidon
Summary
by MITRE • 10/21/2026
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-integrations-vault). Supported versions that are affected are 4.0.0-4.5.5. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. While the vulnerability is in Helidon, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the helidon-integrations-vault component of Oracle Fusion Middleware, specifically affecting Helidon versions ranging from 4.0.0 through 4.5.5. This security flaw represents a critical weakness in how the application handles authentication and access control for sensitive configuration data stored in vault integrations. The core technical issue stems from an insufficient validation mechanism that permits unauthenticated entities to interact with internal APIs or endpoints responsible for retrieving secrets and credentials. Because this component is integral to the middleware's ability to manage secure configurations, a breach here does not merely affect Helidon itself but can lead to a scope change where additional products relying on these shared vault resources are also compromised. This cascading effect amplifies the risk profile significantly beyond the immediate application layer.
From an operational perspective, this vulnerability allows for remote exploitation by attackers who possess network access via HTTP without requiring any form of authentication or user interaction. The attack vector is classified as Network with Low Attack Complexity and requires no Privileges, User Interaction, or Impact to Availability, aligning with a CVSS 3.1 Base Score of 5.8 which indicates a Medium severity level primarily driven by Confidentiality impacts. Successful exploitation enables an unauthorized attacker to gain read access to a subset of Helidon accessible data. This typically includes sensitive information such as database passwords, API keys, or other cryptographic secrets that are stored within the integrated vault system. The exposure of these credentials can serve as a foothold for further lateral movement within the enterprise network, potentially leading to full system compromise if not contained promptly.
In terms of industry standard classifications, this vulnerability maps closely to CWE-287 Improper Authentication and CWE-359 Exposure of Private Information Within a Security Container. The lack of authentication checks on sensitive endpoints is a classic example of broken access control principles found in the OWASP Top 10. Furthermore, from an adversary tactics perspective, this aligns with MITRE ATT&CK technique T1078 Valid Accounts or potentially T1528 Steal Application Access Tokens if the vault integration involves token management. The ability to read sensitive data without authentication facilitates credential harvesting and reconnaissance activities that are foundational for more advanced persistent threats seeking to establish long-term access within an organization's infrastructure.
Mitigation strategies must focus on immediate remediation of the affected software versions as well as implementing compensating controls in network architecture. Oracle has released patches addressing this specific flaw, and administrators should prioritize upgrading Helidon to a version beyond 4.5.5 where these authentication checks have been reinforced. In environments where patching is not immediately feasible, it is critical to implement strict firewall rules or web application firewalls that restrict access to the vulnerable endpoints solely from trusted internal IP ranges. Additionally, enabling mutual TLS for all vault communication channels can ensure that even if an attacker gains network proximity, they cannot exploit the unauthenticated endpoint without presenting valid client certificates. Regular auditing of API gateway configurations and enforcing zero-trust principles on service-to-service communications will further reduce the attack surface associated with this vulnerability.